<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="js/vue.global.js"></script>
</head>

<body>
    <div id='box'>
        {{str}}
        <hr/>
        a = {{a}},b = {{b}}
    </div>
    <script>
        Vue.createApp({
            data() {
                return {
                    str: 'hello',
                    a:100,
                    b:200

                }
            }
        }).mount('#box')
    </script>
</body>

</html>